java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:11:24,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:11:24,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:11:24,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:11:24,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:11:24,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:11:24,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:11:24,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:11:24,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:11:24,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:11:24,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:11:24,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:11:24,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:11:24,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:11:24,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:11:24,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:11:24,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:11:24,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:11:24,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:11:24,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:11:24,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:11:24,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:11:24,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:11:24,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:11:24,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:11:24,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:11:24,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:11:24,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:11:24,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:11:24,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:11:24,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:11:24,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:11:24,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:11:24,656 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:11:24,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:11:24,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:11:24,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:11:24,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:11:24,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:11:24,658 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:11:24,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:11:24,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:11:24,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:11:24,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:11:24,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:11:24,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:24,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:11:24,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:11:24,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:11:24,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:11:24,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:11:24,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:11:24,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:11:24,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:11:24,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:11:24,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:11:24,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:11:24,707 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:11:24,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2019-09-16 16:11:24,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61332a95/8b1adb57e10e4b6ca4476f662f59cecb/FLAGe6ab27c57 [2019-09-16 16:11:25,256 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:11:25,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2019-09-16 16:11:25,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61332a95/8b1adb57e10e4b6ca4476f662f59cecb/FLAGe6ab27c57 [2019-09-16 16:11:25,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61332a95/8b1adb57e10e4b6ca4476f662f59cecb [2019-09-16 16:11:25,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:11:25,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:11:25,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:25,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:11:25,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:11:25,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:25" (1/1) ... [2019-09-16 16:11:25,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682ee9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:25, skipping insertion in model container [2019-09-16 16:11:25,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:25" (1/1) ... [2019-09-16 16:11:25,677 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:11:25,693 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:11:25,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:25,881 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:11:25,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:26,020 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:11:26,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26 WrapperNode [2019-09-16 16:11:26,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:26,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:11:26,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:11:26,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:11:26,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:11:26,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:11:26,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:11:26,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:11:26,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:11:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:11:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:11:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:11:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:11:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:11:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:11:26,348 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:11:26,349 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:11:26,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:26 BoogieIcfgContainer [2019-09-16 16:11:26,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:11:26,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:11:26,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:11:26,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:11:26,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:11:25" (1/3) ... [2019-09-16 16:11:26,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1034a7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:26, skipping insertion in model container [2019-09-16 16:11:26,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (2/3) ... [2019-09-16 16:11:26,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1034a7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:26, skipping insertion in model container [2019-09-16 16:11:26,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:26" (3/3) ... [2019-09-16 16:11:26,358 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-09-16 16:11:26,369 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:11:26,385 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:11:26,428 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:11:26,470 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:11:26,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:11:26,471 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:11:26,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:11:26,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:11:26,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:11:26,471 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:11:26,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:11:26,472 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:11:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-16 16:11:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:11:26,499 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:26,500 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:26,502 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1526440521, now seen corresponding path program 1 times [2019-09-16 16:11:26,511 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:26,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:26,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:26,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:26,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:26,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:11:26,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:11:26,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:11:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:26,694 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-16 16:11:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:26,716 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-09-16 16:11:26,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:11:26,718 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-16 16:11:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:26,728 INFO L225 Difference]: With dead ends: 28 [2019-09-16 16:11:26,728 INFO L226 Difference]: Without dead ends: 13 [2019-09-16 16:11:26,731 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-16 16:11:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-16 16:11:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-16 16:11:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-16 16:11:26,771 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-16 16:11:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:26,771 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-16 16:11:26,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:11:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-16 16:11:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-16 16:11:26,772 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:26,772 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:26,773 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash -281053369, now seen corresponding path program 1 times [2019-09-16 16:11:26,774 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:26,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:26,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:26,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:26,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:26,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:11:26,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:11:26,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:11:26,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:11:26,857 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-09-16 16:11:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:26,908 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-09-16 16:11:26,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:11:26,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-16 16:11:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:26,910 INFO L225 Difference]: With dead ends: 20 [2019-09-16 16:11:26,910 INFO L226 Difference]: Without dead ends: 15 [2019-09-16 16:11:26,911 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:11:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-16 16:11:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-16 16:11:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:11:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-09-16 16:11:26,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-09-16 16:11:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:26,916 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-09-16 16:11:26,916 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:11:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-09-16 16:11:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:11:26,917 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:26,917 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:26,918 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1999502604, now seen corresponding path program 1 times [2019-09-16 16:11:26,918 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:26,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:26,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:26,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:27,010 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-16 16:11:27,017 INFO L168 Benchmark]: Toolchain (without parser) took 1354.56 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.5 MB in the beginning and 130.4 MB in the end (delta: -45.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,018 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.47 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.3 MB in the beginning and 177.3 MB in the end (delta: -93.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,021 INFO L168 Benchmark]: Boogie Preprocessor took 38.71 ms. Allocated memory is still 198.7 MB. Free memory was 177.3 MB in the beginning and 175.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,022 INFO L168 Benchmark]: RCFGBuilder took 290.35 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 161.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,023 INFO L168 Benchmark]: TraceAbstraction took 663.00 ms. Allocated memory is still 198.7 MB. Free memory was 160.6 MB in the beginning and 130.4 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:27,028 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.47 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.3 MB in the beginning and 177.3 MB in the end (delta: -93.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.71 ms. Allocated memory is still 198.7 MB. Free memory was 177.3 MB in the beginning and 175.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.35 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 161.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 663.00 ms. Allocated memory is still 198.7 MB. Free memory was 160.6 MB in the beginning and 130.4 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...